certainly those with belly fat are at increased risk for heart disease and diabetes. also, aerobic exercise helps you live longer. even if you don't lose weight, as long as you keep doing it, i think you need to combine that with a good diet, lowering your fat intake and eating fruits, vegetables, and whole grains. you prevent diabetes and heart disease. two diseases that decrease your survival. >> right. good reason to stay healthy and stick with the new year's resolution. >> right. >> also from the cdc, fructose could lead to overeating. >> fructose, a type of sugar found in high fructose corn syrup, seems to impair the brain's ability to recognize that you're full. you keep eating. gaining weight. >> got it. >> you know -- >> check the labels for that one. >> you need to check the labels. i had a patient lost 30 pounds decreasing her soda intake. amazing. >> good to know especially as we're making resolution this time of year. thank you. >>> up next, stunning images you won't want to miss from the 2012 "national geographic" photo contest. (vo) they were married for